ジホスフィンを用いた炭素-炭素不飽和結合への高選択的なリン官能基導入法の開発

概要

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Addition reaction of heteroatom compounds to carbon-carbon unsaturated bonds based on the cleavage of heteroatom-heteroatom single bonds is one of the most useful and basic methods for selective introduction of heteroatom functional groups into organic molecules. Recently, we have developed addition reactions of tetraphenyldiphosphine bearing P-P single bond to alkynes in the presence of transition metal catalysts or upon photoirradiation. While the photoinduced radical reactions afford the bisphosphination products, the transition-metal-catalyzed reactions give rise to the hydrophosphination products, surprisingly. Based on the combination of tetraphenyldiphosphine and organic dichalcogenides under photoirradiation conditions, we have revealed regioselective addition of both phosphino and chalcogeno groups to carbon-carbon unsaturated bonds.
2010-07-01